Sorry, we never answered your question about how to get more information about your configuration and the fact that you asked got lost in the shuffle.

(Just a side note, though, the fact that you don’t already know how to do this is a hint that alpha versions might not be in your best interest)
Probably the most reliable thing, at this point, is to rename the modx index.php file to index.php.bak and create a new index.php with just this code:
Going to yoursite.com should launch that and give you a ton of information about your configuration.